Electron Transport Quiz

Where does oxidative phosphorylation take place?

• Mitochondrial inner membrane

• Mitochondrial outer membrane

• Cytosol

• Endoplasmic reticulum

What are the electron donors in oxidative phosphorylation?

• NADH and FAD(2H)

• ATP and GTP

• Glucose and Fructose

• CO2 and H2O

What is the final electron acceptor in oxidative phosphorylation?

• Oxygen (O2)

• Carbon dioxide (CO2)

• Water (H2O)

• Glucose (C6H12O6)

How many ATP molecules are generated from each NADH molecule?

• 1 ATP

• 1.5 ATP

• 2 ATP

• 2.5 ATP

How many ATP molecules are generated from each FAD(2H) molecule?

• 0.5 ATP

• 1 ATP

• 1.5 ATP

• 2 ATP

What is the form of energy that directly powers oxidative phosphorylation?

• ATP

• NADH

• FAD(2H)

• Proton motive force

Which complex in the electron transport chain is responsible for pumping out 4 protons?

• Complex I

• Complex II

• Complex III

• Complex IV

Which complex in the electron transport chain is responsible for pumping out 2 protons?

• Complex I

• Complex II

• Complex III

• Complex IV

Which complex in the electron transport chain is inhibited by carbon monoxide (CO) and cyanide (CN)?

• Complex I

• Complex II

• Complex III

• Complex IV

What is the function of coenzyme Q (CoQ) in electron transport?

• To transfer electrons from complex I to complex III

• To transfer electrons from complex II to complex III

• To transfer electrons from complex III to complex IV

• To transfer electrons from complex IV to oxygen